One of the by-products of everyday life is acid rain. While acid rain is composed of several different pollutants, the two main ones are sulfur dioxide (SOX) and nitrogen oxides (NOX). Acid rain may also arrive in several different ways. It may show up in the form of rain, mist, snow, fog, or dry gas. SOX are produced by coal-burning smelters, power plants, and factories. NOX are produced by burning fuels such as gasoline in the cars and oil in the homes. Electric utility plants generate approximately 70 percent of annual SOX emissions and 30 percent of NOX emissions in the United States. Mobile sources also contribute a large amount to NOX emissions. Damage caused by acid rain ranges from respiratory health problems in humans to acidification of bodies of water and the loss of species of fish, and also the damage to forests and the soil needed for the trees to grow. There have been several laws and regulations passed to try and control the levels of acid rain. The Clean Air Act Amendments of 1990, being the main one to be passed and put into use. Once an individual and \ or industry performs a cost benefit analysis the decision will be an effortless. Reduction of the pollutants that cause acid rain needs to be implemented.